Precious metal particle dispersed toughened composite thermal barrier coating and its preparation method

A technology of thermal barrier coating and precious metals, applied in the direction of metal material coating process, coating, mechanical equipment, etc., to achieve the effect of improving heat insulation effect, improving fracture toughness, and wide working temperature range

Inactive Publication Date: 2012-10-17
UNIV OF SCI & TECH BEIJING
View PDF5 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, due to the material and structure of the existing thermal barrier coatings, there are a series of problems to be solved in terms of mechanical propert

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Precious metal particle dispersed toughened composite thermal barrier coating and its preparation method
  • Precious metal particle dispersed toughened composite thermal barrier coating and its preparation method
  • Precious metal particle dispersed toughened composite thermal barrier coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Toughened by hot-pressed filtration sintering dispersed Pt particles (Al 2 o 3 -YAG) / YSZ composite thermal barrier coating

[0039] Preparation of Al 2 o 3 -YAG(Y 3 al 5 o 12 )-Pt particle composite sol-gel, in which the content of solid particles is 60% (mass percentage), the content of oxides converted from sol-gel is 40% (mass percentage), and the particle size of Pt particles is 20~500nm , its content is 1% (mass percentage); the content of YAG is 0.5% (mass percentage). After uniform mixing, it is coated on the surface of nickel-based superalloy, the thickness is controlled at 5mm, and it is sintered into Al by hot-press filtration. 2 o 3 - YAG-Pt composite bonding layer.

[0040] Prepare YSZ-Pt particle composite sol-gel, in which the solid particle content is 60% (mass percentage), the sol-gel converted oxide content is 40% (mass percentage), and the particle size of Pt particles is 20~500nm , and its content is 1% (mass percentage). After...

Embodiment 2

[0042] Example 2: Toughening of dispersed Pt-20%Au particles by pressure microwave sintering (Al 2 o 3 -YAG) / YSZ composite thermal barrier coating

[0043] Preparation of Al 2 o 3 -YAG-(Pt-20%Au) microparticle composite sol-gel, wherein the content of solid particles is 60% (mass percentage), and the content of sol-gel converted to oxide is 40% (mass percentage), (Pt -20%Au) particle size is 20~500nm, its content is 1% (mass percentage); YAG content is 0.5% (mass percentage). After uniform mixing, it is coated on the surface of nickel-based superalloy, the thickness is controlled at 5mm, and it is sintered into Al by pressure microwave sintering. 2 o 3 -YAG-(Pt-20%Au) composite bonding layer.

[0044] -(Pt-20%Au) microparticle composite sol-gel, in which the proportion of solid particles is 60% (mass percentage), and the content of sol-gel converted to oxide is 40% (mass percentage), (Pt-20 %Au) particle size is 20~500nm, its content is 1% (mass percentage). After un...

Embodiment 3

[0046] Example 3: Toughened by pressure microwave sintering of dispersed Pt particles (Al 2 o 3 -YAG) / YSZ / La 2 Zr 2 o 7 Composite Thermal Barrier Coating

[0047] Preparation of Al 2 o 3 -YAG-Pt microparticle composite sol-gel, in which the content of solid particles is 60% (mass percentage), the content of sol-gel converted to oxide is 40% (mass percentage), and the particle size of Pt microparticles is 20~ 500nm, its content is 1% (mass percentage); YAG content is 0.5% (mass percentage). After uniform mixing, it is coated on the surface of nickel-based superalloy, the thickness is controlled at 5mm, and it is sintered into Al by pressure microwave sintering. 2 o 3 - YAG-Pt composite bonding layer.

[0048] Prepare YSZ-Pt microparticle composite sol-gel, in which the content of solid particles is 60% (mass percentage), the content of oxides converted from sol-gel is 40% (mass percentage), and the particle size of Pt microparticles is 20~ 500nm, its content is 1% (...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention which relates to a precious metal particle dispersed toughened composite thermal barrier coating and its preparation method belongs to the composite material field. The composite thermal barrier coating comprises a composite adhesion layer formed by a precious metal particle dispersed Al2O3-rare earth oxide, and a thermal insulation layer formed by various low-thermal-conduction ceramic single or double layers toughened by the dispersed precious metal particles. The dispersed precious metal particles comprise Au, Pt, a Pt-Au alloy, and a Pt-Rh alloy, and account for 0.5-3% of the composite thermal barrier coating. The preparation method adopts a composite sol-gel hot press filter sintering technology, a composite sol-gel pressurizing microwave sintering technology or a plasma spray technology to prepare the precious metal particle dispersed toughened composite thermal barrier coating, so the composite thermal barrier coating has the advantages of excellent thermal barrier performance, excellent high temperature oxidation resistance, excellent cracking resistance, excellent stripping resistance, excellent thermal shock resistance, stable structure, wide use temperature range, and long service life.

Description

technical field [0001] A kind of dispersed precious metal particle toughened composite thermal barrier coating and its preparation method of the present invention belong to the field of composite materials, relate to composite materials and coating technology, and are used to increase the service temperature of superalloys and refractory alloys, and improve the performance of thermal barrier coatings. Fracture toughness, improve the bonding force between the thermal barrier coating and the matrix alloy, improve the high temperature oxidation resistance, avoid the reduction of the mechanical properties of the matrix alloy, and prolong the service life of the hot end parts. Background technique [0002] Thermal barrier coatings (TBCs for short) use the high temperature resistance, corrosion resistance and low thermal conductivity of ceramic materials to increase the working temperature of the metal hot end parts, enhance the high temperature oxidation resistance of the hot end ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23C30/00F01D5/28
CPCY02T50/60
Inventor 何业东马晓旭张津邓舜杰王德仁李洪
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap